MUC1 and adenocarcinoma: A combination of “generic” adenocarcinoma markers (CK7, CK19, BerEP4, and polyclonal CEA) together with vimentin and a limited number of “pancreatobiliary” markers (MUC1 and CA19-9) defines its characteristic immunohistochemical profile (Fig 4C and 4E, S2 Fig).